The four celebrities will be playing for charity. O’Neal will support the Odessa Chambliss Quality Of Life Fund, Marie will play for the American Cancer Society, Fiasco will represent the MURAL foundation, and Bush will compete to raise money for the 619 Charitable Fund.

“The single-elimination tournament will consist of two first-round matches and a winner’s match (three matches total). The champion will earn a majority of the prize pool, with all other participants receiving a portion of the funds for their charities,” says TBS of the format.

The April 28 broadcast will air at 10PM ET. Behind-the-scenes photos from the taping follow (all photos via TBS):